Y LightLine Fastpack M/L 1-24 is an ultralightweight high performance pack with a flexible storage volume. The pack is designed for rapid outdoor enthusiasts who value functional design as simple as it is brilliant. Use the adjustable harness and the compression system to tighten your stuff close to your body. Fasten the Bergans patented RS3 stability system and your stuff suddenly feels like a part of your body as you move along the trails. The 3D molded back panel and shoulder harnesses are made from highly breathable and lightweight mesh in order to provide optimal ventilation. Y LightLine Fastpack M/L 1-24 is the ideal pack for high activity hikes. If you just want to look sporty on your way to work, it is possible to replace the hydration system with your laptop.